LCD-Monitor Chassis Model PO24FS 242MP SERVICE Manual TFT-LCD MONITOR Fashion Feature - Worldwide TV Monitor Model (Input to NT,PAL and SECAM areas supported). - MFM (Multi-function Monitor) : A variety of external sources supported as well as PC PC, DVI, DVD, DTV Set-top Box.
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Samsung Electronics Co.,Ltd. This Service Manual is a property of 416, Maetan-3Dong, Yeongtong-Gu, Suwon City, Gyeonggi-Do, Samsung Electronics Co., Ltd. Korea, 443-742 Any unauthorized use of Manual can be Printed in Korea punished under applicable International P/N : BN82-00124B-00 and/or domestic law.
-Adopts the Dolby Virtual and BBE features to enhance the sound quality. -MFM TV MONITOR (RF, FM, AV, S-VIDEO, COMPONENT, SCART, PC, DVI). -242MP: Uses the AMLCD 6300K Panel (PVA PANEL). -Video Input: RF, CVBS (Composite Video Baseband Signal),S-VIDEO,COMPONENT, SCART(RGB,CVBS),PC ANALOG and DVI.
13 Circuit Descriptions 13-1-1 Overall Block Description <Main Board> Formats of input sources include RF, CVBS, S-VIDEO,COMPONENT,SCART,PC and DVI. GM1601H, a SCALER IC, has built-in TMDS that enables to process DVI signals without an additional IC and includes HDCP (High Bandwidth Digital Content Protection). This is a neighboring circuit component IC that consists of a DDR memory and a 2M flash memory chips.
13 Circuit Descriptions 13-2 Main board part 13-2-1 VSP (Within VCTI) - 4 Inputs and 1 Output - CVBS, S-Video, RF, SCART MST9886 Input External Video Source Input Video(AV) S-Video Scart 13-2-2 MST9886 - 8 Bit ADC - 2 input 1 output - Used for Component input (Y, Pb, Pr Signal R,G,B Signal (D))
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13 Circuit Descriptions 13-2-3 MDIN150 - Macro Image Tech.( ) Deinterlacer IC - Motion Adaptive 3-D Deinterlacing - Serial I2C Communication MST9886 Output GM 1601 Input - If the AD converted video signal by ADC is an Interlaced signal, the signal is converted into a progressive signal.
13 Circuit Descriptions 13-2-5 S5D2544X - System LSI ( ) Enhancer IC - Serial I2C Communication - ASE, GTC, Color Tone, Gamma, 6-Color, Color Weakness SCALER Output PANEL Output LVDS Output LVDS Input 13-2-6 Sound <1> - Audio Switch : TEA6422 - Audio Delay AD : PCM1802 Delay : NJU26901...
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13 Circuit Descriptions 13-2-7 Sound <2> - Global version(All sound standard) - BBE, virtual Dolby Surround, Mute function - Audio decoder: MSP (within Vcti) - Amplifier : TPA3002 Sound Input Sound Input Sound Input Speaker Speaker TPA3002 Headphone amp Did I skip RF Sound Delay? RF Sound is output though the Vcti Sound Output, switched and delayed by TEA6422 and re-input to Vcti.
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13 Circuit Descriptions 13-3 MagicColor Pro 13-3-1 MagicColor (Factory mode: Off) - Off: Not adaptive full color saturation enhancement - Intelligent: Adaptive full color saturation enhancement except skin color - Full: Adaptive full color saturation enhancement - Demo: Display difference between adaptive full color and non-adaptive full color saturation enhancement 13-3-2 Color Tone (Factory mode: Noraml) - Warm2(4000K) , Warm1(5000K) , Normal(6500K) , Cool1(7000K) , Cool2(8000K), Cool3(9300K), Cool4(10000K)
4 Alignments and Adjustments 4 Alignments and Adjustments This section describes to adjust LCD monitor after replacing EEPROM, Main PBA or Panel. 4-1 Factory Mode Adjustments - PAL : Power off INFO MENU MUTE Power ON - NTSC : Power off MUTE Power ON 4-2 Factory DATA...
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4 Alignments and Adjustments c i t Black Level Expander/Compressor (BLEC) : Leaves bright images as they are and makes dark images darker. This function is used to adjust the visual quality. (TV, AV, S-Video and Scart only) Menus for White Balance Adjustment :Adjusts the Drive (gain) and Cutoff (offset) to adjust the color temperature and the screen display quality.
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4 Alignments and Adjustments Luma/Chrominance Transient Improvement (LTI/CTI) :Corrects the suite signal of the luminance and the color difference signal to enhance the sharpness and to reduce peaking. The higher the peaking value, the higher the sharpness. However, a higher sharpness also shows noise more clearly. (TV, AV, S-Video and Scart only) -Peaking :Adjusts the Peaking strength and weakness by adjusting the...
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4 Alignments and Adjustments Contrast, Brightness, Saturation and Tint Adjustment :Adjusts Br,Cont and Color,Tint by adjusting the output signal level of the VCTI IC.(TV, AV, S-Video and Scart only) -VSP(Video Processor) part -SCART YCrCb Control This menu is used to adjust the contrast, brightness, color saturation and tint of the Scart R,G,B output signal.
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4 Alignments and Adjustments -MSP(Multistandard Sound Processor) part -ADC9883 part s f f s f f Caution: This function is used to adjust the sense of color. However, adjusting to an extreme value may saturate a color. Red/BLUE/GREEN Input Gain/Offset Adjustment :Although the Offset/Gain can be adjusted in the DDP block of the VCT, ADC and Scaler, you can only adjust the Offset/Gain in DDP and Scaler in our implementation.
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4 Alignments and Adjustments Caution: PC analog Only ( 1920*1200@60Hz 16gray pattern) The color adjustment will only work properly with a particular pattern in a particular mode. Using the color adjustment in other cases may distort the color. s f f The Color Adjustment function provided by Gm1601.
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4 Alignments and Adjustments -Option/Color Weakness/Checksum -Factory Selection: Select the country in which the monitor has been manufactured -Erase NVRam : Erases the Scaler RAM. Do not select this menu. Bus-Stop : Stops the I2C that is used by Micom to ¡®force¡¯...
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4 Alignments and Adjustments -Mdin 150 If the value of the Coring is low, it is close to a moving picture. If the value is high, it is close to a still picture. (Common for Y and C) If the value of the Gain is low, it is close to a still picture.
4 Alignments and Adjustments 4-3 DDC jig installation * Please use DVI cable connection adapter for DVI input. 4-4 How to execute DDC...
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4 Alignments and Adjustments Click “Sys Config” Select “Station : Write station” Check “Serial No and Week : Don’ t change” Click “Save” Click “Open” icon. Select “Connected Port #1” and Next “OK”. File Name - 242MPA.DDC : Analog 242MPD.DDC : DVI Press enter key on your keyboard.
4 Alignments and Adjustments 4-5 Micom program upgrade Make a connection as done for DDC input, and supply power to the set. Run the Malibu Flash Downloader 1.7 program. 1. Select Flash Download. 2. Select 4MB_CF. 3. Select a program to download. 4.
4 Alignments and Adjustments 4-6 Factory Mode Adjustments 4-6-1 Factory Mode OSD GAMMA BLE MODE BLE GAIN BLE TILT STATIC BLE CUT OFF R CUT OFF B CUT OFF G CUT OFF WHITE DRIVE R DRIVE B DRIVE G DRIVE BLUE STRETCH LTI CORING LTI GAIN...
4 Alignments and Adjustments Brightness Contrast Cb Saturation Cr Saturation Tint FM - AM - Presc NICAM - Presc SCART - Presc ADC 9883 RED Gain BLUE Gain GREEN Gain RED Offset BLUE Offset GREEN Offset Auto Color Custom Color RED Gain GREEN Gain BLUE Gain...
5 Disassembly and Reassembly 5 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the PO24FS LCD monitor. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 5-1 Disassembly Cautions: 1.
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Disassembly and Reassembly 3. Remove 4 screws from the Shield and lift up the shield. FH, +, B, M3, L8, BLK, PLT, SWRCH18A FH, +, M3, L6, N1 PLT, SWRCH18A, FP 4. Disconnect cables and remove 4 screws from the Invert PCB shield . 5.
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Disassembly and Reassembly 6. Disconnect cables and remove 4 screws. 7. Lift up the board. 5-2 Reassembly Reassembly procedures are in the reverse order of dissasembly procedures, place the lamp wire correctly in the locator groove so that the wire will not bind or interfere with rear cover.
6 Troubleshooting 6 Troubleshooting 6-1 No Power Does proper DC12V appear at Check Adapter C614(+12V _IN)? Does proper DC5V appear at Check Adapter FT670(+5V _IN)? Does proper DC5V appear at Check Adapter FT671(+5V _STDIN)? Does proper DC12V appear at Check related circuit of IC602 or IC300 FT672(+12V _MAIN)? Does proper DC5V appear at Check related circuit of IC603 or IC300...
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6 Troubleshooting 6-2 No Lamp Does proper DC24V appear at Check Adapter C602(+24V _IN)? Does proper DC24V appear at Check related circuit of IC601 or IC300 FT600(+24V _INVERTER)? Check Inverter and Lamp of LCD Panel...
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6 Troubleshooting 6-3 No Video (PC Signal) Power Indicator is Green Does a signal appear at Pin. No. Check related circuit of IC102 or CN101 4, 10 of IC102(H/V Sync)? (Schmitte Trigger or 15P D-sub) Does a signal appear at C100, C102, Check related circuit of CN101 (15P D-sub) C104(R,G,B input)?
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6 Troubleshooting 6-4 No Picture (TV Signal) Does a signal appear at Pin. No. 1,2 of Check CN703 and Tuner FT810(1F,2 of X6966M)? Does a signal appear at R821, R826, Check relatted circuit of IC802 and Q801, Q802, Q803(VCTi) R827(VCT_ROUT, GOUT, BOUT)? Does a signal appear at Pin.
6 Troubleshooting 6-5 No Picture (Video, S-Video, Scart) Does a signal appear at R726(VIDEO_AR), R727(VIDEO_AL), Check CN701 and CN702 or AV Device R721(S-Video), R711(Scart)? Does a signal appear at R821, R826, Check relatted circuit of IC802 and Q801, Q802, Q803(VCTi) R827(VCT_ROUT, GOUT, BOUT)? Does a signal appear at Pin.
6 Troubleshooting 6-6 No Picture(COMPONENT) Does a signal appear at R7069(COMP_Y), Check CN701 or AV Device R7067(COMP_PB), R7073(COMP_PR)? Does a signal appear at Check related circuit of IC7001(MST9886) RA7002~RA7003(ADC output)? Does a signal appear at RA902~RA903, Check related circuit of IC900(Mdin150) RA905~RA908 (Deinterlacer output)? Does a signal appear at Pin.
6 Troubleshooting 6-7 No Sound(Component) Does a signal appear at R745(COMP_AR), Check CN701 or AV Device R747(COMP_AL)? Does a signal appear at R759(AIN_L), Check related circuit of IC700(TEA6422) R760(AIN_R)? Does a signal appear at C548(VAIN_L), Check related circuit of IC503(PCM1802), IC502(PCM1754) and IC505(NJU26901) C549(VAIN_R)? Does a signal appear at R510(LOUD_OUT_R),...
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6 Troubleshooting 6-8 No Sound(TV) Does a signal appear at Pin. No. 1,2 of Check CN703 and Tuner FT810(IF1,2 of X6966M)? Does a signal appear at R862(TV_L), Check related circuit of IC802(VCTi) R863(TV_R)? Does a signal appear at R759(AIN_L), Check related circuit of IC700(TEA6422) R760(AIN_R)? Does a signal appear at C548(VAIN_L), Check related circuit of IC503(PCMI802),...
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6 Troubleshooting 6-9 No Sound(VIDEO, S-VIDEO, SCART) Does a signal appear at R726(VIDEO_AR), Check CN701, CN702 or AV Device R727(VIDEO_AL), R723(SCART_RIN), R722(SCART_LIN)? Does a signal appear at R759(AIN_L), Check related circuit of IC700(TEA6422) R760(AIN_R)? Does a signal appear at C548(VAIN_L), Check related circuit of IC503(PCM1802), IC502(PCM1754) and IC505(NJU26901) C549(VAIN_R)?
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6 Troubleshooting 6-10 No Sound(PC) Does a signal appear at L101(PC_AL), L102(PC_AR)? Check CN107 Does a signal appear at R759(AIN_L), Check related circuit of IC700(TEA6422) R760(AIN_R)? Does a signal appear at C548(VAIN_L), Check related circuit of IC503(PCM1802), IC502(PCM1754) and IC505(NJU26901) C549(VAIN_R)? Does a signal appear at R510(LOUD_OUT_R), Check related circuit of IC802 (VCTi)
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6 Troubleshooting 6-11 Problems & Troubleshooting (Checklist) When display noises such as vertical lines or dots appear on the screen. When the screen repeatedly powers on and off, this is probably due to one of the Backlight wires being disconnected. When any of the function keys or the IR does High voltages run through the primary GND and not work.
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6 Troubleshooting 6-12 Voltage Checkpoint (INVERTER) While the power is off, the #2 pin STD of the 10-pin connector still runs an electric current of 5V while the others are turned off and go into standby. The consumption power is satisfied in this way. 6-22...
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6 Troubleshooting 6-13 Voltage Checkpoint (SMPS) When any one of the backlight lamp wires is disconnected, the screen will repeatedly power on and off, to protect the screen. First check the lamp wires. 6-14 Follow-ups for Board Replacement - Check if the PC colors are properly adjusted. - DDC Input (Both analog and digital inputs required) - Perform a hard power off after resetting in service mode.
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7 Exploded View & Parts List 7 Exploded View & Parts List -You can search for updated part codes through ITSELF web site. URL : http://itself.sec.samsung.co.kr/ 7-1 Device Development Figure...
12 Schematic Diagrams 12 Schematic Diagrams -This Document can not be used without Samsung's authorization. 12-1 3D PC INPUT Part Schematic Diagram 12-1...
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12 Schematic Diagrams -This Document can not be used without Samsung's authorization. 12-2 SCALER Part Schematic Diagram 12-2...
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12 Schematic Diagrams -This Document can not be used without Samsung's authorization. 12-3 MCU & FUNCTION Part Schematic Diagram 12-3...
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12 Schematic Diagrams -This Document can not be used without Samsung's authorization. 12-4 VIDEO INPUT 2 Part Schematic Diagram 12-4...
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12 Schematic Diagrams -This Document can not be used without Samsung's authorization. 12-5 VIDEO Part Schematic Diagram 12-5...
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12 Schematic Diagrams -This Document can not be used without Samsung's authorization. 12-6 ADC Part Schematic Diagram 12-6...
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12 Schematic Diagrams -This Document can not be used without Samsung's authorization. 12-7 AUDIO & LIPSYNC Part Schematic Diagram 12-7...
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12 Schematic Diagrams -This Document can not be used without Samsung's authorization. 12-8 POWER & INVERTER Part Schematic Diagram 12-8...
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12 Schematic Diagrams -This Document can not be used without Samsung's authorization. 12-9 3D COMB FILTER Part Schematic Diagram 12-9...
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12 Schematic Diagrams -This Document can not be used without Samsung's authorization. 12-10 DEINTERLACER MDIN150 Part Schematic Diagram 12-10...
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12 Schematic Diagrams -This Document can not be used without Samsung's authorization. 12-11 CM_LVDS 2 Part Schematic Diagram 12-11...